/* ==========================================================================
   吴玉章 · 作品集主页  style.css
   暗色 · 克制 · 荧光蓝主题
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  --bg:#05070b;
  --bg-2:#080b11;
  --surface:rgba(255,255,255,.03);
  --surface-2:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --ink:#e8eef8;
  --ink-2:#93a1b5;
  --ink-3:#5b6779;
  --accent:#00e5ff;
  --accent-2:#3b82f6;
  --accent-dim:rgba(0,229,255,.12);
  --glow:0 0 40px rgba(0,229,255,.32);
  --grad:linear-gradient(135deg,#00e5ff 0%,#3b82f6 100%);
  --ease:cubic-bezier(.22,.8,.26,1);
  --r:14px;
  --r-sm:10px;
  --nav-h:72px;
  --maxw:1240px;
  --pad:40px;
  --sec-y:128px;
  --font-cn:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-en:"SF Pro Display",Inter,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-mono:"SF Mono","JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h);-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.15;font-weight:600;}
p{margin:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
::selection{background:rgba(0,229,255,.28);color:#fff;}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.skip{
  position:fixed;left:16px;top:-60px;z-index:99;
  padding:10px 18px;background:var(--accent);color:#04121a;border-radius:8px;
  font-size:13px;font-weight:600;transition:top .2s var(--ease);
}
.skip:focus{top:16px;}

.mono{font-family:var(--font-mono);}
.grad-text{
  background:linear-gradient(100deg,#7ff2ff 0%,#00e5ff 42%,#3b82f6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--ink-3);margin:0;
}
.sup{font-size:.5em;vertical-align:super;color:var(--accent);}

/* ---------- 3. Layout ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);}
.sec{padding:var(--sec-y) 0;position:relative;}
.sec-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

.sec-head{margin-bottom:64px;max-width:760px;position:relative;}
.sec-num{
  display:block;font-size:11px;letter-spacing:.24em;color:var(--accent);
  margin-bottom:16px;opacity:.85;
}
.sec-head h2{
  font-size:clamp(30px,4vw,44px);letter-spacing:-.02em;
  display:flex;align-items:baseline;flex-wrap:wrap;gap:14px;
}
.sec-en{
  font-size:11px;letter-spacing:.18em;color:var(--ink-3);font-weight:400;
  font-family:var(--font-mono);
}
.sec-sub{margin-top:16px;color:var(--ink-2);font-size:15.5px;line-height:1.8;}
.blk-title{
  font-size:11px;letter-spacing:.2em;color:var(--ink-3);
  font-family:var(--font-mono);font-weight:500;margin-bottom:26px;
}

/* ---------- 4. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.04em;white-space:nowrap;
  transition:all .22s var(--ease);cursor:pointer;
}
.btn-primary{background:var(--grad);color:#04121a;}
.btn-primary:hover{box-shadow:0 0 30px rgba(0,229,255,.42);transform:translateY(-2px);}
.btn-primary svg{transition:transform .22s var(--ease);}
.btn-primary:hover svg{transform:translateX(4px);}
.btn-ghost{
  border-color:var(--line-strong);color:var(--ink);background:var(--surface);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-dim);}
.btn-sm{padding:9px 18px;font-size:13px;}

/* ---------- 5. Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(5,7,11,.78);backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-inner{
  width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);
  height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  font-family:var(--font-en);font-weight:700;font-size:15px;letter-spacing:.14em;
  color:var(--accent);
}
.brand-sep{width:1px;height:14px;background:var(--line-strong);}
.brand-txt{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;color:var(--ink-3);
}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{
  font-size:14px;color:var(--ink-2);position:relative;padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--accent);transition:width .26s var(--ease);
}
.nav-links a:hover,.nav-links a.active{color:var(--ink);}
.nav-links a:hover::after,.nav-links a.active::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink);transition:.25s var(--ease);}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.25px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.25px) rotate(-45deg);}

/* ---------- 6. Hero ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:calc(var(--nav-h) + 72px) 0 40px;overflow:hidden;
}
#fx{position:absolute;inset:0;width:100%;height:100%;z-index:0;}
.hero-grid-bg{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.032) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 80% 70% at 62% 40%,#000 20%,transparent 85%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 62% 40%,#000 20%,transparent 85%);
}
.hero-glow{
  position:absolute;z-index:0;pointer-events:none;
  width:900px;height:900px;right:-160px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,255,.16) 0%,rgba(59,130,246,.1) 38%,transparent 66%);
  filter:blur(30px);
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;
  gap:56px;align-items:center;flex:1;width:100%;
}
.hero-copy{max-width:660px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;border:1px solid var(--line);border-radius:999px;
  background:var(--surface);color:var(--ink-2);
}
.hero-eyebrow .dot{
  width:5px;height:5px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px var(--accent);animation:pulse 2.4s infinite;
}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.25;}}

.hero-title{
  margin:28px 0 0;display:flex;flex-direction:column;gap:2px;
  font-size:clamp(42px,6.4vw,88px);font-weight:700;letter-spacing:-.03em;line-height:1.02;
}
.hero-title .l1{
  background:linear-gradient(180deg,#fff 0%,#c8d6e9 60%,#8291a6 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-title .l2{padding-bottom:.06em;}
.hero-en{
  margin-top:20px;font-family:var(--font-en);font-size:14.5px;letter-spacing:.06em;
  color:var(--accent);opacity:.9;
}
.hero-desc{
  margin-top:22px;max-width:560px;font-size:16px;line-height:1.9;color:var(--ink-2);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px;}
.hero-tags span{
  font-size:12.5px;padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  transition:all .2s var(--ease);
}
.hero-tags span:hover{border-color:rgba(0,229,255,.5);color:var(--accent);background:var(--accent-dim);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px;}

/* Hero 人像 */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:flex-end;}
.hero-frame{
  position:relative;width:100%;max-width:400px;border-radius:var(--r);
  overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(0,229,255,.07),transparent 55%);
}
.hero-frame img{
  width:100%;aspect-ratio:3/4;object-fit:cover;object-position:center 22%;
  filter:saturate(.92) contrast(1.04) brightness(.96);
  transition:transform .8s var(--ease);
}
.hero-frame:hover img{transform:scale(1.03);}
.hero-frame-line{
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
  opacity:.7;
}
.hero-badge{
  position:absolute;left:calc(50% - 200px - 22px);bottom:56px;
  display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:18px 20px;border-radius:var(--r);
  background:rgba(8,11,17,.82);border:1px solid var(--line);
  backdrop-filter:blur(10px);box-shadow:0 20px 50px rgba(0,0,0,.5);
}
.hero-badge-k{font-size:28px;font-weight:700;color:var(--accent);letter-spacing:-.02em;}
.hero-badge-l{
  font-size:9px;letter-spacing:.16em;color:var(--ink-3);text-align:center;line-height:1.5;
}

.hero-foot{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:20px;margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  font-size:10.5px;letter-spacing:.2em;color:var(--ink-3);
}
.hero-foot-mid{color:var(--ink-2);}
.hero-scroll{color:var(--ink-3);transition:color .2s var(--ease);}
.hero-scroll:hover{color:var(--accent);}

/* ---------- 7. About ---------- */
.about-grid{
  display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start;
}
.about-photo{
  margin:0;position:relative;border-radius:var(--r);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(0,229,255,.06),transparent 60%);
}
.about-photo img{
  width:100%;aspect-ratio:3/4;object-fit:cover;
  filter:saturate(.92) contrast(1.05) brightness(.95);
}
.about-photo figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  font-size:10px;letter-spacing:.18em;color:var(--ink-2);
  background:linear-gradient(0deg,rgba(5,7,11,.92),transparent);
}
.about-copy p{color:var(--ink-2);font-size:15.5px;line-height:1.9;}
.about-copy p + p{margin-top:18px;}
.about-copy .lead{
  font-size:17.5px;line-height:1.85;color:var(--ink);
}
.about-copy b{color:var(--ink);font-weight:600;}

.contact-list{
  margin-top:34px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;
}
.contact-list li{
  display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:10px;
  padding:16px 18px;background:var(--bg);transition:background .2s var(--ease);
}
.contact-list li:hover{background:var(--surface);}
.ci{display:flex;color:var(--accent);opacity:.85;}
.cl{font-size:12px;color:var(--ink-3);}
.cv{font-size:14px;color:var(--ink);grid-column:3;}
a.cv:hover{color:var(--accent);}

.about-qr{
  margin-top:24px;display:inline-flex;padding:12px;border-radius:var(--r);
  border:1px solid var(--line);background:#fff;
}
.about-qr img{width:104px;height:104px;}

/* Stats */
.stats{
  margin-top:72px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
}
.stat{
  background:var(--bg);padding:32px 26px;display:flex;flex-direction:column;gap:8px;
  transition:background .25s var(--ease);
}
.stat:hover{background:var(--surface);}
.stat-n{
  font-size:38px;font-weight:700;letter-spacing:-.02em;line-height:1;
  background:linear-gradient(180deg,#fff,#9fc6d8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  display:flex;align-items:flex-start;
}
.stat-l{font-size:13px;color:var(--ink-3);line-height:1.6;}

/* Blocks */
.blocks{margin-top:72px;display:grid;grid-template-columns:1.35fr .65fr;gap:44px;align-items:start;}
.panel + .panel{margin-top:36px;}
.panel{padding:28px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);}

.timeline{border-left:1px solid var(--line);padding-left:26px;}
.timeline li{position:relative;padding-bottom:32px;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:'';position:absolute;left:-31px;top:7px;width:9px;height:9px;border-radius:50%;
  background:var(--bg);border:1.5px solid var(--ink-3);transition:.25s var(--ease);
}
.timeline li:hover::before{border-color:var(--accent);box-shadow:0 0 12px rgba(0,229,255,.6);}
.tl-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;justify-content:space-between;}
.tl-head h4{font-size:17px;letter-spacing:-.01em;}
.tl-date{font-size:11px;letter-spacing:.1em;color:var(--ink-3);white-space:nowrap;}
.tl-role{margin-top:6px;font-size:13px;color:var(--accent);opacity:.9;}
.tl-desc{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-2);}

.edu li{padding:14px 0;border-bottom:1px solid var(--line);}
.edu li:last-child{border-bottom:0;padding-bottom:0;}
.edu li:first-child{padding-top:0;}
.edu h4{font-size:15px;}
.edu-meta{margin-top:6px;display:flex;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--ink-3);}
.edu-meta .mono{font-size:11px;letter-spacing:.08em;}

.skill-bars li{display:flex;align-items:center;gap:14px;padding:9px 0;}
.sb-l{font-size:13px;color:var(--ink-2);width:150px;flex:0 0 auto;}
.sb-t{flex:1;height:3px;border-radius:2px;background:rgba(255,255,255,.08);overflow:hidden;}
.sb-t i{
  display:block;height:100%;width:var(--w,50%);border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transform:scaleX(0);transform-origin:left;
  transition:transform 1s var(--ease);
}
.reveal.in .sb-t i{transform:scaleX(1);}

/* ---------- 8. Works ---------- */
.works{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.work{position:relative;}
.work-wide{grid-column:1 / -1;}
.work-link{
  display:flex;flex-direction:column;height:100%;
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:var(--surface);
  transition:border-color .3s var(--ease),transform .3s var(--ease),background .3s var(--ease);
}
.work-link:hover{border-color:rgba(0,229,255,.42);transform:translateY(-4px);background:var(--surface-2);}
.work-cover{
  position:relative;overflow:hidden;background:
    radial-gradient(120% 120% at 20% 0%,rgba(0,229,255,.09),transparent 60%),
    linear-gradient(180deg,#0a0e15,#070a10);
  border-bottom:1px solid var(--line);
}
.work-cover svg{display:block;width:100%;height:auto;transition:transform .7s var(--ease);}
.work-cover[data-kind="01"] svg{aspect-ratio:800/420;}
.work-cover[data-kind="02"] svg,
.work-cover[data-kind="03"] svg,
.work-cover[data-kind="04"] svg,
.work-cover[data-kind="05"] svg,
.work-cover[data-kind="06"] svg,
.work-cover[data-kind="07"] svg{aspect-ratio:420/300;}
.work-link:hover .work-cover svg{transform:scale(1.035);}
.work-cover::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 55%,rgba(5,7,11,.55));
}
.work-idx{
  position:absolute;top:16px;left:18px;z-index:2;
  font-size:11px;letter-spacing:.18em;color:var(--ink-2);
  padding:4px 10px;border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(5,7,11,.6);backdrop-filter:blur(6px);
}
.work-body{padding:28px 30px 30px;display:flex;flex-direction:column;flex:1;}
.work-meta{font-size:10.5px;letter-spacing:.16em;color:var(--ink-3);}
.work-title{
  margin-top:12px;font-size:21px;letter-spacing:-.01em;
  transition:color .25s var(--ease);
}
.work-link:hover .work-title{color:var(--accent);}
.work-desc{margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.work-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.work-tags span{
  font-size:11.5px;padding:4px 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--ink-3);
}
.work-go{
  margin-top:auto;padding-top:22px;font-size:11px;letter-spacing:.16em;
  color:var(--ink-3);display:flex;align-items:center;gap:8px;
  transition:color .25s var(--ease);
}
.work-link:hover .work-go{color:var(--accent);}
.work-go span{transition:transform .25s var(--ease);}
.work-link:hover .work-go span{transform:translate(3px,-3px);}

.works-note{
  margin-top:36px;font-size:12.5px;line-height:1.8;color:var(--ink-3);
  padding:16px 20px;border:1px dashed var(--line-strong);border-radius:var(--r-sm);
}
.works-note .mono{color:var(--accent);letter-spacing:.16em;margin-right:6px;}
.works-note code{
  font-family:var(--font-mono);font-size:12px;color:var(--ink-2);
  background:rgba(255,255,255,.05);padding:2px 6px;border-radius:4px;
}

/* ---------- 9. Expertise ---------- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.card{
  position:relative;padding:32px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--surface);overflow:hidden;
  transition:border-color .3s var(--ease),background .3s var(--ease),transform .3s var(--ease);
}
.card::before{
  content:'';position:absolute;left:0;top:0;height:1px;width:0;
  background:linear-gradient(90deg,var(--accent),transparent);
  transition:width .45s var(--ease);
}
.card:hover{border-color:rgba(0,229,255,.35);background:var(--surface-2);transform:translateY(-4px);}
.card:hover::before{width:100%;}
.card-idx{
  position:absolute;top:28px;right:30px;
  font-size:11px;letter-spacing:.18em;color:var(--ink-3);
}
.card-ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:12px;
  border:1px solid rgba(0,229,255,.28);background:var(--accent-dim);color:var(--accent);
  margin-bottom:22px;
}
.card h3{font-size:19px;letter-spacing:-.01em;margin-bottom:12px;}
.card p{font-size:14.5px;line-height:1.85;color:var(--ink-2);}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.card-tags li{
  font-size:11.5px;padding:3px 11px;border-radius:999px;
  border:1px solid var(--line);color:var(--ink-3);
}

/* Process */
.process{
  margin-top:44px;padding:40px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--surface);
}
.process-head{margin-bottom:38px;}
.process-head p{color:var(--ink-2);font-size:14.5px;margin-top:10px;}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.steps li{position:relative;padding-top:26px;border-top:1px solid var(--line-strong);}
.steps li::before{
  content:'';position:absolute;top:-3px;left:0;width:6px;height:6px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 12px rgba(0,229,255,.8);
}
.step-n{
  position:absolute;top:20px;right:0;font-size:11px;letter-spacing:.16em;color:var(--ink-3);
}
.steps h4{margin-top:14px;font-size:16px;}
.steps p{margin-top:10px;font-size:13.5px;line-height:1.8;color:var(--ink-2);}

/* ---------- 10. Contact ---------- */
.contact{
  position:relative;padding:var(--sec-y) 0 0;overflow:hidden;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg) 0%,#070b12 60%,#05070b 100%);
}
.contact-glow{
  position:absolute;left:50%;bottom:-40%;transform:translateX(-50%);
  width:1100px;height:700px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(0,229,255,.13) 0%,rgba(59,130,246,.07) 40%,transparent 70%);
  filter:blur(30px);
}
.contact-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start;
}
.contact-title{
  margin-top:22px;font-size:clamp(38px,5.6vw,72px);font-weight:700;letter-spacing:-.03em;line-height:1.06;
}
.contact-en{margin-top:18px;font-family:var(--font-en);font-size:14.5px;letter-spacing:.05em;color:var(--accent);opacity:.9;}
.contact-desc{margin-top:22px;max-width:520px;font-size:15.5px;line-height:1.9;color:var(--ink-2);}
.contact-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

.contact-cards{
  display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
}
.contact-cards li{
  display:flex;flex-direction:column;gap:6px;padding:20px 24px;background:var(--bg);
  transition:background .2s var(--ease);
}
.contact-cards li:hover{background:var(--surface);}
.cc-k{font-size:10px;letter-spacing:.22em;color:var(--ink-3);}
.cc-v{font-size:16px;color:var(--ink);transition:color .2s var(--ease);}
a.cc-v:hover{color:var(--accent);}

.contact-qr{
  margin-top:20px;display:flex;align-items:center;gap:20px;padding:20px;
  border:1px solid var(--line);border-radius:var(--r);background:var(--surface);
}
.contact-qr img{
  width:104px;height:104px;border-radius:8px;background:#fff;padding:5px;flex:0 0 auto;
}
.contact-qr-txt .mono{font-size:10px;letter-spacing:.2em;color:var(--accent);}
.contact-qr-txt p{margin-top:8px;font-size:13.5px;color:var(--ink-2);line-height:1.7;}

.contact-foot{
  position:relative;z-index:2;margin-top:88px;padding:26px 0 34px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:10.5px;letter-spacing:.16em;color:var(--ink-3);
}
.contact-foot-mid{color:var(--ink-3);opacity:.75;}
.back-top{color:var(--ink-3);transition:color .2s var(--ease);}
.back-top:hover{color:var(--accent);}

/* ---------- 11. Reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 12. Responsive ---------- */
@media (max-width:1080px){
  :root{--pad:32px;--sec-y:104px;}
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-copy{max-width:none;order:1;}
  .hero-visual{order:0;justify-content:flex-start;}
  .hero-frame{max-width:340px;}
  .hero-badge{left:auto;right:0;bottom:24px;}
  .about-grid{grid-template-columns:1fr;gap:40px;}
  .about-photo{max-width:360px;}
  .blocks{grid-template-columns:1fr;gap:36px;}
  .contact-grid{grid-template-columns:1fr;gap:44px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
}

@media (max-width:900px){
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;top:var(--nav-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(5,7,11,.97);backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    padding:0 var(--pad);max-height:0;overflow:hidden;
    transition:max-height .34s var(--ease),padding .34s var(--ease);
  }
  .nav-links.open{max-height:320px;padding:12px var(--pad) 24px;}
  .nav-links a{padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;}
  .nav-links a:last-child{border-bottom:0;}
  .nav-links a::after{display:none;}
  .nav-right .btn span{display:none;}
  .nav-right .btn{padding:9px 12px;}
}

@media (max-width:760px){
  :root{--pad:20px;--sec-y:72px;--nav-h:64px;}
  body{font-size:15px;}
  .sec-head{margin-bottom:40px;}
  .sec-head h2{gap:10px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat{padding:24px 20px;}
  .stat-n{font-size:30px;}
  .works{grid-template-columns:1fr;gap:16px;}
  .work-body{padding:22px;}
  .work-title{font-size:19px;}
  .cards{grid-template-columns:1fr;gap:16px;}
  .card{padding:26px 22px;}
  .card-idx{top:22px;right:22px;}
  .process{padding:26px 22px;}
  .steps{grid-template-columns:1fr;gap:24px;}
  .contact-list{grid-template-columns:1fr;}
  .contact-qr{flex-direction:column;align-items:flex-start;}
  .contact-foot{flex-direction:column;align-items:flex-start;gap:10px;}
  .contact-foot-mid{display:none;}
  .hero{padding-top:calc(var(--nav-h) + 44px);}
  .hero-foot{flex-wrap:wrap;gap:10px;font-size:9.5px;}
  .hero-foot-mid{display:none;}
  .about-qr img{width:88px;height:88px;}
  .panel{padding:22px;}
  .timeline{padding-left:20px;}
  .timeline li::before{left:-25px;}
  .hero-badge{position:static;margin-top:16px;flex-direction:row;gap:12px;padding:12px 16px;align-self:flex-start;}
  .hero-badge-l{text-align:left;}
  .hero-visual{flex-direction:column;align-items:flex-start;}
}

@media (max-width:420px){
  .hero-frame{max-width:none;}
  .stats{grid-template-columns:1fr;}
  .btn{padding:13px 22px;font-size:13.5px;}
  .contact-title{letter-spacing:-.02em;}
}

/* ---------- 13. Motion guard ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;}
  .reveal{opacity:1;transform:none;}
  .sb-t i{transform:scaleX(1);}
  #fx{display:none;}
}